Reduction Kinetics of Metal Oxides by Hydrogen

被引：45

作者：

Dang, Jie ^{[1
,2
]}

Chou, Kuo-Chih ^{[1
,2
]}

Hu, Xiao-Jun ^{[1
,2
]}

Zhang, Guo-Hua ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Dept Phys Chem, Beijing 100083, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2013年 / 84卷 / 06期

基金：

中国国家自然科学基金;

关键词：

reduction; isothermal kinetics; non-isothermal kinetics; double reactions; metal oxides; hydrogen; GAS-SOLID REACTIONS; HEARTH FURNACE PROCESS; LOW-TEMPERATURE REDUCTION; IRON-OXIDES; GASEOUS REDUCTION; STRUCTURAL MODEL; MOVING BOUNDARY; FLUIDIZED-BED; MODERATE TEMPERATURES; VOLATILE REDUCTION;

D O I：

10.1002/srin.201200242

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this paper, a new kinetic model has been developed for reduction of metal oxides with hydrogen under both isothermal and non-isothermal conditions. This model describes the kinetics of single reductive reaction and double reductive reactions by considering the diffusion and chemical reaction controlling mechanisms. In particular, the model is in the analytic form of expressing the reduction extent as an explicit function of time, temperature, radius of the particle, and hydrogen partial pressure, which is convenient for using and theoretical analysis. The reduction kinetics of nickel oxide, natural ilmenite, and Fe2MoO4 agree well with the theoretical results by the present model.

引用

页码：526 / 533

页数：8

共 43 条

[1]

Al-Kahtany M.M., 1980, Ironmaking and Steelmaking, V7, P49

[2] IRON-OXIDE REDUCTION KINETICS BY HYDROGEN [J].